Rotary particle treatment head curtain sealing structure

Abstract

The invention discloses a rotary particle treatment head curtain sealing structure, and belongs to the technical field of proton therapy, the rotary particle treatment head curtain sealing structure comprises a hollow rack and a telescopic particle treatment head, the inner side of the rack is provided with a C-shaped mounting port, the particle treatment head is rotatably arranged in the mounting port, the rack is internally provided with a C-shaped first track, and the first track is provided with a second track. And a C-shaped second rail is fixedly arranged between the two ends of the first rail. According to the rotary particle treatment head curtain sealing structure, the sliding frame on the first track is matched with the curtain to seal the particle treatment head and the rack, the second track is matched with the first track to enable the sliding frame to move along with rotation of the particle treatment head, and dust on the curtain is cleaned through the dust collection assembly at the second track. Compared with an existing device, the problem that dust falls into and is accumulated in a gap between the particle treatment head and the rack is solved, the stability of the device is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of proton therapy, and in particular relates to a curtain sealing structure of a rotating particle therapy head. Background Art

[0002] Proton therapy uses proton therapy equipment to inject protons into the human body, forming a sharp Bragg peak at the end of the range to cover the tumor, thereby killing tumor cells and treating cancer. Since the energy loss and side scattering of protons are small in the incident channel, the dose received by normal tissues in front, behind, and around is small, so it has become an important means of treating cancer in modern medicine.

[0003] Particle therapy equipment such as proton therapy devices consist of a particle therapy head, a frame and a treatment bed. During the treatment, the patient lies on the treatment bed, and the frame controls the particle therapy head to move around the treatment bed to treat different diseased parts.

[0004] Since the particle therapy head needs to perform telescopic and rotational movements in the active opening of the therapy head during the treatment process, a gap will be generated between the particle therapy head and the frame. However, the existing particle therapy equipment on the market does not have a corresponding sealing structure. During long-term use, dust will fall into and accumulate in the gap between the particle therapy head and the frame. The dust particles will wear the internal mechanical structure, causing the movement accuracy of the particle therapy head to decrease, and thus leading to a decrease in the treatment effect of the particle therapy equipment.

[0005] Therefore, we propose a rotating particle therapy head curtain sealing structure to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose a curtain sealing structure for a rotating particle therapy head.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A rotary particle therapy head curtain sealing structure comprises a hollow frame and a retractable particle therapy head, wherein a C-shaped mounting port is provided on the inner side of the frame, and the particle therapy head is rotatably arranged in the mounting port, a C-shaped first track is provided inside the frame, a C-shaped second track is fixedly provided between the two ends of the first track, a plurality of sliding frames are slidably provided inside the first track and the second track, a curtain is fixedly provided on the outer side of the sliding frame, the curtains on adjacent sliding frames are fitted together, two sliding frames are respectively fitted on both sides of the particle therapy head, and a dust collection component acting on the curtain is provided at the second track.

[0009] Preferably, the second track is located outside the first track, and the curvature of the second track is greater than that of the first track.

[0010] Preferably, the dust suction assembly is located at both ends of the second track.

[0011] Preferably, a brush plate is fixedly provided at the middle portion of the inner side of the second track, and the end of the brush plate is in contact with the curtain of the corresponding sliding frame.

[0012] Preferably, the brush plate is in a vertical state, and the top and bottom ends of the brush plate are respectively in contact with the curtain of the corresponding sliding frame.

[0013] Preferably, the brush plate is located in the middle of the air outlet of the dust collection assembly.

[0014] Preferably, the second track is provided with a ventilation slot at the air outlet of the dust collection component.

[0015] Preferably, a scraper is fixedly provided at one end of the fixed section of the particle therapy head facing the telescopic section.

[0016] In summary, the technical effects and advantages of the present invention are as follows: the rotating particle therapy head curtain sealing structure realizes the sealing of the particle therapy head and the frame by means of the sliding frame on the first track cooperating with the curtain, and the sliding frame moves along with the rotation of the particle therapy head by means of the second track cooperating with the first track, and the dust on the curtain is cleaned by the dust collection component at the second track. Compared with the existing device, the problem of dust falling into and accumulating in the gap between the particle therapy head and the frame is avoided, thereby improving the stability and service life of the device.

[0017] In addition, the screen is scraped and cleaned by a brush plate arranged in the middle of the inner side of the second track, thereby improving the cleaning effect of the dust collection component. At the same time, the screen can generate weak static electricity through friction, so that dust can be adsorbed on the screen, preventing dust from falling from the gap between the screen and the frame, thereby improving the stability of the device and the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a cross-sectional front view of the present invention;

[0020] Figure 3 It is a cross-sectional front view of the first track of the present invention;

[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0023] Figure 6 It is a cross-sectional side view of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the particle therapy head in the present invention.

[0025] In the figure: 1, frame; 2, particle therapy head; 3, installation port; 4, first track; 5, second track; 6, sliding frame; 7, curtain; 8, dust collection assembly; 9, brush plate; 10, scraper; 11, ventilation slot; 2a, fixed section; 2b, telescopic section; 81, air outlet. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-3 A rotating particle therapy head curtain sealing structure includes a hollow frame 1 and a retractable particle therapy head 2. It should be noted that the particle therapy head 2 should be connected to a particle acceleration component. The particle acceleration component is a prior art and is common in the field of proton therapy. It will not be described in detail. Since the particle acceleration component is large in size and has no direct relationship with the present invention, it is not drawn in the schematic diagram. A C-shaped mounting port 3 is provided on the inner side of the frame 1, and the particle therapy head 2 is rotatably arranged in the mounting port 3. A C-shaped first track 4 is provided inside the frame 1, and a C-shaped second track 5 is fixedly provided between the two ends of the first track 4.

[0028] Reference Figure 1 , Figure 2 , Figure 4 , a plurality of sliding racks 6 are slidably arranged inside the first track 4 and the second track 5, a curtain 7 is fixedly arranged outside the sliding rack 6, and adjacent sliding racks 5 can be connected by mutually hinged connecting rods, so that the curtains 7 on adjacent sliding racks 6 can fit each other. Since the connection method through connecting rods is relatively common, no further elaboration is required. Two sliding racks 6 are respectively fitted on both sides of the particle therapy head 2, and a dust collection component 8 acting on the curtain 7 is arranged at the second track 5. The dust collection component 8 is a prior art, including a dust collection motor, a speed regulator, an air outlet 81, and a filter box, etc., and no further elaboration is required here. A through groove connecting the inside of the frame 1 and the air outlet 81 is provided on the side wall of the frame 1.

[0029] The rotary particle therapy head curtain sealing structure, when placed, the curtains 7 on adjacent sliding frames 6 fit together, thereby sealing the gap between the installation port 3 and the particle therapy head 2, and limiting dust from entering the gap. During treatment, the particle therapy head 2 slides and positions in the installation port 3, and the sliding frame 6 slides accordingly. When the sliding frame 6 passes through the second track 5, the dust collection component 8 cleans the dust on the sliding frame 6 and the curtain 7. Cleaning is performed synchronously during the treatment process, avoiding the problem of needing an additional cleaning step, and improving the efficiency of proton therapy.

[0030] It should be noted that the movement of the sliding frame 6 can use a passive solution or an active solution. The passive solution is to push the sliding frame 6 to move by the rotation of the particle therapy head 2, which is low in cost but may affect the rotation accuracy of the particle therapy head 2. The active solution is to drive multiple sliding frames 6 to move synchronously with the particle therapy head 2 through an additional driving component, and the driving component may include a driving motor, a chain, etc. The driving component is a prior art and is common in the transmission field, so it will not be described in detail. The active solution can reduce the impact on the particle therapy head 2, but the cost is high, and it can be selected as needed in actual use.

[0031] Reference Figure 2 , Figure 6 Since the first track 4 is used to match the installation opening 3 of the frame 1, and the dust collection component 8 does not require too much space, the second track 5 is located outside the first track 4, and the curvature of the second track 5 is greater than that of the first track 4, thereby improving the internal space utilization of the frame 1.

[0032] Reference Figure 2-4 Since the particle therapy head 2 rotates in an uncertain direction during use, the dust collection assembly 8 is located at both ends of the second track 5, so that the dust collection assembly 8 can clean the dust on the curtain 7 regardless of whether the particle therapy head 2 rotates clockwise or counterclockwise.

[0033] A brush plate 9 is fixedly provided at the middle of the inner side of the second track 5 , and the end of the brush plate 9 is in contact with the curtain 7 of the corresponding sliding frame 6 , and the curtain 7 is brushed by the brush plate 9 to improve the dust cleaning effect.

[0034] The brush plate 9 is in a vertical state, and the top and bottom ends of the brush plate 9 are respectively in contact with the curtain 7 of the corresponding sliding frame 6. The brush plate 9 is used to brush the upper and lower curtains 7 of the second track 5, so that no matter whether the particle therapy head 2 rotates clockwise or counterclockwise, the brush plate 9 can clean the dust on the curtain 7 in the first place.

[0035] Since the suction force in the middle of the air outlet 81 of the dust collection component 8 is the greatest, and a large amount of dust will fall simultaneously when the brush plate 9 brushes the curtain 7, the brush plate 9 is located in the middle of the air outlet 81 of the dust collection component 8 to improve the cleaning effect.

[0036] Reference Figure 5 In order to prevent dust from falling into the second track 5 during cleaning, the second track 5 is provided with a ventilation slot 11 at the air outlet 81 of the dust collection assembly 8, so as to suck out the dust inside the second track 5 and improve the cleaning effect.

[0037] Due to usage habits, the screen 7 near the particle therapy head 2 is difficult to be cleaned, so after using it for a period of time, the particle therapy head 2 is moved from one end of the installation opening 3 to the other end to thoroughly clean the screen 7. In actual use, the two screens 7 on both sides of the particle therapy head 2 are difficult to be scraped and cleaned by a scraper, but because the particle therapy head 2 is generally located at the upper part of the installation opening 3 when placed, there is less dust on the two screens 7 on both sides of the particle therapy head 2, and the dust suction component 8 can be used to completely clean them.

[0038] Reference Figure 7 A scraper strip 10 is fixedly provided at one end of the fixed section 2a of the particle therapy head 2 facing the telescopic section 2b, and the scraper strip 10 is used to seal the gap at the telescopic part of the particle therapy head 2 to prevent dust from entering, thereby improving the stability and service life of the device. The scraper strip 10 can be fixedly connected to the fixed section 2a of the particle therapy head 2 by means of buckles, screws, adhesives, etc.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary particle therapy head curtain sealing structure, comprising a hollow frame (1) and a retractable particle therapy head (2), wherein a C-shaped mounting opening (3) is provided inside the frame (1), and the particle therapy head (2) is rotatably arranged in the mounting opening (3), characterized in that: A C-shaped first track (4) is provided inside the frame (1), a C-shaped second track (5) is fixedly provided between the two ends of the first track (4), a plurality of sliding frames (6) are slidably provided inside the first track (4) and the second track (5), a curtain (7) is fixedly sleeved on the outer side of the sliding frame (6), the curtains (7) on adjacent sliding frames (6) are fitted to each other, two sliding frames (6) are respectively fitted to the two sides of the particle treatment head (2), and a dust collection component (8) acting on the curtain (7) is provided at the second track (5).

2. A rotary particle therapy head curtain sealing structure according to claim 1, characterized in that: The second track (5) is located outside the first track (4), and the curvature of the second track (5) is greater than that of the first track (4).

3. The rotary particle therapy head curtain sealing structure according to claim 1, characterized in that: The dust suction components (8) are located at both ends of the second track (5).

4. The rotary particle therapy head curtain sealing structure according to claim 1, characterized in that: A brush plate (9) is fixedly provided at the middle of the inner side of the second track (5), and the end of the brush plate (9) is in contact with the curtain (7) of the corresponding sliding frame (6).

5. The rotary particle therapy head curtain sealing structure according to claim 4, characterized in that: The brush plate (9) is in a vertical state, and the top and bottom ends of the brush plate (9) are respectively in contact with the curtain (7) of the corresponding sliding frame (6).

6. The rotary particle therapy head curtain sealing structure according to claim 5, characterized in that: The brush plate (9) is located in the middle of the air outlet of the dust collection component (8).

7. The rotary particle therapy head curtain sealing structure according to claim 3, characterized in that: The second track (5) is provided with a ventilation slot (11) at the air outlet of the dust collection component (8).

8. The rotary particle therapy head curtain sealing structure according to claim 1, characterized in that: A scraper strip (10) is fixedly provided on one end of the fixed section (2a) of the particle therapy head (2) facing the telescopic section (2b).

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